Big growroom dilemma....

[Nawshis]

I currently set up a bloom room in a basement room...

First let me say this site is a God send and I have been trolling around for a long time and I didn't want to post as I found almost everything I needed from searching.

This is my first real "big" grow so to speak

Dimensions are 4'5" x 4'5" x 6'

1600 w under one hood.

At first the issue I was expecting is ceiling headway, but I will be growing from clone so I hope it wont be too much of an issue.

But, heat and ventilation is what is concerning me...

I have a 50 gallon co2 tank and wanted to run the room sealed... but heat I understand will be a huge issue.. I can air cool the hood but it only has a 4" flange for air cooling.

A mini split is really not in my budget and a window A/C with a window shaker is not really feasible as well..

Does anybody have any sound advice... It is greatly appreciated.

 

[Guest]

It would make sense to have a command of the grow room before putting plants into the equation. IF You don't take the time to dial in all of the issues you spoke of you can be assured of problem after problem and more "Q" trips to the Forums than you can count.

Take the time to prepare a written plan and a drawing or 2, make a serious appraisal of your estimation of performance and THEN buy the necessary equipment to handle a successful grow.

1600W???? What are you running for lighting???? 4 x 400W MH or HPS?, or a load of CFL's?

TyStik

 

[yamaha_1fan]

how are you running 1600W under ONE hood?

I think w/o AC you need to ditch the CO2. Even if aircooling the lights, you will still get heat that has to be dealt with. I would suggest running an exhasut fan exhausting the whole room with a carbon filter. Have a passive intake from a cooler area.

If stuck on the CO2, you can get a controller that will control the CO2 in combination with your exhaust fans and stop dispersing CO2 while the exhasut fans are running.

Give some more details and maybe we can give more solutions

 

[Nawshis]

Its a dual bulb Growzilla w/ a 1000w HPS and a 600w MH conversion bulb...I can use a portable A/C worst case scenario

 

[Nawshis]

bump ...

 

[yamaha_1fan]

Give some more details and maybe we can give more solutions

^^^^^^^^^

CO2 and the portable A/C wont work. The portable will drain your CO2 almost as fast as you put it in

 

[Nawshis]

Well the room was constructed as a room within a room. So the basement is 10 x 10 and I walled off 4.5 X 4.5 with some wood and made two walls with Panda. The main room itself has no windows and it is in the basement.

I can, however, leave the basement door open for ventilation purposes. The co2 controller seems like a viable option. But im sure w/ 1600w in such a confined space the exhaust fans would have to run 24/7??

I have a carbon scrubber and what I was planning on running the scrubber thru the hood with a blower or an inline pulling the air thru the hood and up, out the ceiling. while still running sealed... Not sure what kind of issues I can run into however doing it this way.

I am going to run the ballasts outside of the bloom room. the 1000w is a magnetic which will produce heat, the 600w is a digi.

 

[Nawshis]

is there anything else that I left out that would be helpful??

 

[darthvapor]

co2 would actually allow you to run hotter in th 82f-90f range. I ran my room for 5 days without any plants in it to dial the room in. Once you do that then you could actually have fun growing. Is there a room near upstairs by with a window you could use as a lung room. You could cool of that room and then vent it down to the basement with ducting?

 

[Nawshis]

co2 would actually allow you to run hotter in th 82f-90f range. I ran my room for 5 days without any plants in it to dial the room in. Once you do that then you could actually have fun growing. Is there a room near upstairs by with a window you could use as a lung room. You could cool of that room and then vent it down to the basement with ducting?

Hey thanks, I suppose I COULD vent the room directly above into the basement from upstairs. It is a bedroom though so, not sure how convenient it would be.

I could, however, vent into the next room adjacent and run a window a/c and vent cool air into the bloom room. I have read there could be problems with this however.

 

[Nawshis]

bump for some more luck maybe??

 

[Guest]

Nawshis---Luck has nothing to do with the final equation. Your understanding of the plants requirements is necessary for a grow that Flourishes.

Peace

TyStik

Study first----ask Q's later.

 

[Barn Growin']

Just curious but how does a Co2 Tank generate heat? Like Darth said with co2 you can run the temps higher than normal in fact the plants take up the co2 better in those higher temps.

 

[Nawshis]

Just curious but how does a Co2 Tank generate heat? Like Darth said with co2 you can run the temps higher than normal in fact the plants take up the co2 better in those higher temps.

not the tanks dude, he is talking about the co2 generators.

 

[DiscoDuck]

Well the room was constructed as a room within a room. So the basement is 10 x 10 and I walled off 4.5 X 4.5 with some wood and made two walls with Panda. The main room itself has no windows and it is in the basement.

I can, however, leave the basement door open for ventilation purposes. The co2 controller seems like a viable option. But im sure w/ 1600w in such a confined space the exhaust fans would have to run 24/7??

I have a carbon scrubber and what I was planning on running the scrubber thru the hood with a blower or an inline pulling the air thru the hood and up, out the ceiling. while still running sealed... Not sure what kind of issues I can run into however doing it this way.

I am going to run the ballasts outside of the bloom room. the 1000w is a magnetic which will produce heat, the 600w is a digi.

You might want to reconsider venting Co2 into the bedroom above the basement grow. might be unhealthy, not real sure.

You still have the option of using Co2 in the sealed environment you spoke of. If you go with the idea of venting the hood through the ceiling into the bedroom above, you'll need to provide intake air for the hood that is segregated from the grow room air, i.e. ducting. If you're gonna go to the trouble to cut a hood exhaust into the ceiling/floor, all you have to do is cut one more and make it the intake. The heat from the hood will exhaust into the bedroom, may heat things up a bit but won't transfer unhealthy Co2 into the bedroom. yamaha_1fan's idea about the controller will work good without the intake I spoke of because Co2 would only be released when the exhaust fan isn't blowing. You'd still have to consider releasing Co2 into the bedroom when the exhaust fan comes on.

The quick math says you'll have about 80 watts per sq. foot and ~ 10,000? lumens per sq. foot. This is robust compared to some basement setups I've seen on IC. I've read threads suggesting ~ 400 watt to 600 watt hps for 4' x 4' footprints. 400 watt hps may be a little lean on the periphery but certainly a 600 watt MH in veg and 1000 watt hps in flower should fulfill the requirements of your space pretty well. The reason I say this is because the combined heat may be a difficult task to overcome with the limited options in your basement for ventilation. Have you considered using the bulbs independently even though they're both housed in the same fixture, veg with the 600 and flower with the 1000? This might reduce your heat issue as much as 50% because MH runs hotter than hps by comparison to light output.

Granted, your combined light output is bigger and better than using them independently. The light spectrum will be improved by the blue light of the MH. However, if heat causes your plants to stress, the combined light/heat may be worse for your environment than using the lights by themselves.

Remember, you have about six feet of headroom. Subtract the vertical space that will be used for the hood and grow pots and you'll come up with 4 feet or less of net headroom for the plants. If you burn both bulbs, your plants will not be able to grow as close to the light as they could with just one bulb. Maybe if you do a scrog, vertical space won't be an issue with 1600 watts.

I hope you have a digi and post lots of pics here. With that kind of light output and controlled temps, you'll have one hell of a growing factory.

Duck

 

[DiscoDuck]

not the tanks dude, he is talking about the co2 generators.

Co2 will allow your plants to grow in a hotter environment, it doesn't increase the temps in and of itself (unless you're using a burner.)

 

[Barn Growin']

not the tanks dude, he is talking about the co2 generators.

I'm not talking about what he was referring too. Did you not say you were using a 50 pound tank though??

 

[Nawshis]

I'm not talking about what he was referring too. Did you not say you were using a 50 pound tank though??

yes I have a 50 pound tank but ... the tank is not the issue its the heat the light will produce.. Im in a small space... 4'5" x 4'5" x 6' and running 1600 w we have run it dry and the shit got over 98

 

[Navigator330]

Get the glass to cover your reflectors and vent just the hoods. This will keep the co2 in the room and your temps will drop alot. 1600 watts in that space is over kill. half that and you'd be ok. But if you must vent the hoods first. I wouldnt put a thing in there until you run it for a few days and see what happens. You may be in for a big suprise that would zap your plants before you have a chance!

 

[TGT]

I agree with Navigator330, that space is too small for so much light. A 1000 watt air cooled would be perfect and I think your yield would be pretty much the same. The extra bulb is just increasing the temperature and lowering the humidity and nothing else - good at least. I would think in a space that size you would have to air cool your lights - I don't think it could be done any other way. Just my 2 cents.

TGT